The Frederick SportsPlex has all you indoor sporting needs covered. Indoor soccer, hockey, tennis, football, lacrosse, volleyball, basketball and more. We also have a restaurant, gym, and many shops and offices. The Frederick SportsPlex, SportsPlex, indoor soccer, indoor arena, indoor hockey, indoor tennis, indoor lacrosse, arena football, Frederick SportsPlex. Frederick sports, indoor sports, Frederick soccer, roller hockey, coed soccer, womens soccer, mens soccer, turf, indoor volleyball, volleyball.